A note containing handwritten numbers for wind, trajectory, and distance was discovered by Steven Paddock’s body inside the Las Vegas hotel room where he took his life last Sunday after slaughtering 58 people and injuring hundreds, officials have confirmed.

Law enforcement officials briefed on the investigation confirmed to ABC News on Sunday that the note found on Paddock’s hexagon-shaped nightstand contained such numerical figures.

The note’s details, first reported by 60 Minutes, were revealed by Las Vegas Metropolitan Police Department Officer Dave Newton, who said he spotted it resting by Paddock’s “shooting platform.”

“I could see on it he had written the distance, the elevation he was on, the drop of what his bullet was going to be for the crowd,” Newton said in a clip from the the episode, which will be televised on Sunday night. “So he had had that written down, and figured out so he would know where to shoot to hit his targets from there.”

Pressed about what the meaning of the numbers were, Newton said, Paddock “must have done the calculations online or something, to figure out what his altitude was going to be, and how high up he was — how far out the crowd was going to be, and what — at that distance — and what the drop of his bullet was going to be.

“He hadn’t written out the calculations — all he had was written out [was] the final numbers that were on the sheet,” he added.